Photon sphere and phase transition of d-dimensional (d ≥ 5) charged Gauss-Bonnet AdS black holes

Shan-Zhong Han,Jie Jiang,Ming Zhang,Wen-Biao Liu

Figure 5. Behaviors of the reduced coexistence region as a function of Q and α for d-dimensional charged Gauss-Bonnet AdS black holes with $\tilde{P}=0.98$ when (a) d = 6, (b) d = 7, (c) d = 8, (d) d = 9, (e) d = 10. Here, charge Q and Gauss-Bonnet coefficient α range from 0.01 to 0.15, respectively.